U.S. ROBOTICS, INC.

PASSWORD MODEM

Modem Type             Data (synchronous/asynchronous)
Maximum Data Rate      1200bps
Data Bus               External
Data Modulation        Bell 103A/212A
Protocol

[Image]

                                CONNECTIONS

        Purpose           Location            Purpose            Location

  Line in                   CN1       RS-232/422                   CN3

  DC power                  CN2       Power switch                 SW2

   MULTILINE PHONE INSTALLATION

  Setting               J1

  » Single line        Off

  Multiline             On

    CHARACTER LENGTH

  Setting       J2

  » 10-bit      Off

  11-bit        On

                        TRANSMIT AND RECEIVE SIGNAL

  Setting                            J3                      J4

  » Normal pin assignment     Pins 1 & 2 closed       Pins 1 & 2 closed

  Tx/Rx pins reversed         Pins 2 & 3 closed       Pins 2 & 3 closed

            ANLOG LOOPBACK TEST MODE

  Setting                         J5

  » On                     Normal operation

  Off                    Analog loopback mode

                                AUTO ANSWER

  Setting                                            SW1/1

  » Off                                   Modem answers on first ring

  On                                  Modem does not answer on first ring

           CARRIER DETECT

  Setting               SW1/2

  » Off               CD normal

  On               CD forced high

                                PBX MODE

  Setting                                          SW1/3

  » Off                              Normal dial up line equalization

  On                                           PBX operation

              DTR SIGNAL

  Setting                SW1/4

  » Off                DTR normal

  On                DTR forced high